Like Scott mentioned, the plug-in replacement LED bulbs work great in the `68 Barracuda tail light. The bulbs I bought were found on e-Bay for about $10 a pair. I used the barrel-style w/LED's around the edge for more light-dispersion in the small housing.





The seller's name is Sylvia-biz.
http://stores.ebay.com/Sylvia-biz-Store/...1513&_pgn=2


As for the actual installation, you must match the rest of the circuit with LED's. You also have to use an electronic flasher as the old bi-metallic type will not operate. I installed LED's in the tail/brake lights and front parking/directional's and they work & look great.




* While your at it add a third brake light using LED's too. I tapped into the Barracuda's brake light switch before the directional switch and ran it to a high mounted billit aluminum street rod style lamp. I attached it to the upper rear headliner lip and tucked the wires under the inner weatherstrip for the window. Looks great at night and is VERY effective.

`68 Barracuda 340-S